As expected, the proposed Airworthiness Directive to inspect the wing spar on thousands of Piper PA-28 and PA-32-series aircraft (including retracs) has been finalized. As we reported last fall, the AD was prompted after an Embry- Riddle Aeronautical University Piper Arrow lost a wing on a commercial checkride flight in Florida back in 2018.
The final ruling and prescribed compliance is written in AD 2020-26-16 and includes inspection for wing fatigue cracking in a visually inaccessible area of the lower main wing spar cap.